<!DOCTYPE HTML>
<html>
<body>
<fieldset style="display:grid; overflow:hidden; grid-template-columns: repeat(4,50px); grid-auto-rows: 20px; width:200px; height:200px;">
  <legend>Legend</legend>
  <p>X
  <p>X
  <p>X
  <p>X
  <p>X
  <p>X
  <p>X
  <p>X
  <p>X
  <p>X
  <p>X
</fieldset>
<fieldset style="display:grid; grid-auto-columns: 50px; grid-auto-rows: 20px;">
  <legend>Legend</legend>
  <p>X
  <p>X
  <p>X
  <p>X
  <p>X
  <p>X
  <p>X
</fieldset>
</body>
</html>
